EP0699661A2 - Procédé pour la préparation de sulfonates d'éthers - Google Patents
Procédé pour la préparation de sulfonates d'éthers Download PDFInfo
- Publication number
- EP0699661A2 EP0699661A2 EP95113205A EP95113205A EP0699661A2 EP 0699661 A2 EP0699661 A2 EP 0699661A2 EP 95113205 A EP95113205 A EP 95113205A EP 95113205 A EP95113205 A EP 95113205A EP 0699661 A2 EP0699661 A2 EP 0699661A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- general formula
- compound
- alkyl
- hydrogen
- mol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 18
- -1 ether sulfonates Chemical class 0.000 title claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 title claims description 9
- 238000002360 preparation method Methods 0.000 title claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 9
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 5
- 229910006069 SO3H Inorganic materials 0.000 claims abstract description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- 150000001340 alkali metals Chemical group 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims description 29
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 239000001257 hydrogen Substances 0.000 claims description 17
- 238000006386 neutralization reaction Methods 0.000 claims description 12
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- 239000011541 reaction mixture Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 125000006273 (C1-C3) alkyl group Chemical group 0.000 claims description 3
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 3
- 125000006552 (C3-C8) cycloalkyl group Chemical group 0.000 claims description 3
- 125000005915 C6-C14 aryl group Chemical group 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 17
- 125000000753 cycloalkyl group Chemical group 0.000 abstract description 3
- 125000003118 aryl group Chemical group 0.000 abstract description 2
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000000047 product Substances 0.000 description 13
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- SUMDYPCJJOFFON-UHFFFAOYSA-N isethionic acid Chemical compound OCCS(O)(=O)=O SUMDYPCJJOFFON-UHFFFAOYSA-N 0.000 description 11
- 229940098779 methanesulfonic acid Drugs 0.000 description 6
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 5
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000010626 work up procedure Methods 0.000 description 3
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- HHOUUNSSXPYWKJ-UHFFFAOYSA-N 2-(2-hydroxyethoxy)ethanesulfonic acid Chemical compound OCCOCCS(O)(=O)=O HHOUUNSSXPYWKJ-UHFFFAOYSA-N 0.000 description 1
- 125000006176 2-ethylbutyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(C([H])([H])*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000005210 alkyl ammonium group Chemical group 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 238000009419 refurbishment Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- SZINDZNWFLBXKV-UHFFFAOYSA-M sodium;2-(2-hydroxyethoxy)ethanesulfonate Chemical compound [Na+].OCCOCCS([O-])(=O)=O SZINDZNWFLBXKV-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/32—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of salts of sulfonic acids
Definitions
- the present invention relates to a process for the preparation of high-purity, largely foreign salt-free ether sulfonates by reacting alcohols with hydroxyalkyl sulfonic acid salts under basic catalysis.
- Ether sulfonates are important chemical intermediates and are used for a number of industrial applications.
- Alkyl groups can be straight-chain or branched and are, for example, methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec-butyl, tert-butyl, n-pentyl, 3-methylbutyl, pentyl-3, n -Hexyl, 2-ethylbutyl or 2-ethylhexyl.
- Alkyl R 1 preferably has 1 to 5, particularly preferably 1 to 3, carbon atoms.
- Alkyl R2 to R5 or R 2 ' to R 5' preferably has 1 to 3 carbon atoms.
- Cycloalkyl is in particular cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl, with cyclopentyl and cyclohexyl being preferred. Cycloalkyl is also understood to mean, for example, dimethylcycloalkyl.
- Alkenyl groups can also be straight-chain or branched and correspond, for example, to the alkyl groups mentioned above.
- Preferred alkenyl groups have 2 to 5 carbon atoms, with vinyl and allyl being particularly preferred.
- Aryl groups are preferably phenyl, naphthyl, biphenyl or fluorenyl, with phenyl being particularly preferred.
- Preferred arylalkyl groups are benzyl and phenethyl.
- An alkali metal for M is preferably sodium and potassium.
- An ammonium group representing M preferably has the formula ⁇ NR6R7R8R9, where R6, R7, R8 and R9 independently of one another represent hydrogen, (C1-C6) alkyl, phenyl, substituted phenyl or halogen. Tetra- (C1-C4) alkylammonium is particularly preferred.
- the process according to the invention is a base-catalyzed condensation reaction which is carried out in particular at temperatures of 150 to 250 ° C., particularly preferably 180 ° C. under normal pressure. It is preferred to continuously withdraw the water formed during the reaction by distillation from the reaction mixture.
- the reaction times are generally 2 to 10 hours.
- the compound of general formula II in an amount of 200 to 700 mol%, the compound of general formula III in an amount of 100 mol% and the compound of general formula IV in an amount of 10 to 20 mol% used.
- the compound of the general formula III used in excess is separated off by means of a thin-film evaporator.
- a pressure of 10 to 500 mbar and a temperature of 120 to 250 ° C. are preferably maintained.
- the compounds of the general formula V can be obtained in a simple manner in that a compound of the general formula I from a previous reaction batch in a manner known to those skilled in the art with a Acid suitable pK s -value was added and the product is isolated.
- acids such as sulfuric acid, hydrochloric acid or methanesulfonic acid are suitable.
- the compounds of general formula I prepared by the process according to the invention are highly pure and largely free of foreign salt.
- largely free of foreign salt means that the foreign salt content of the compounds of the general formula I prepared according to the invention is at most 2% by weight.
- the reaction mixture is heated to an internal temperature of 190-190 ° C. with constant stirring.
- the jacket temperature of the distillation column is kept at 110-120 ° C.
- About 18.0 g of water distill off from the reaction mixture within 3 h.
- the alkaline product solution is neutralized by adding approximately 17.0 g (0.1 mol) of 2- (2-hydroxyethoxy) ethanesulfonic acid with constant stirring.
- the ether sulfonate is isolated from the glycol-containing product solution by means of thin-layer evaporation.
- the jacket heating of the evaporator tube is kept at approx. 200 o C.
- the vacuum was regulated to 10 mbar.
- the 2- (2-hydroxyethoxy) ethanesulfonic acid sodium salt (Diglykolsulfonklare Na salt) is obtained as a colorless distillation residue having a melting range of 140 -150 o C.
- the glycol content is below 1% by weight.
- the purity is 98.2% by weight.
- the foreign salt content is 0.3% by weight.
- the reaction temperature is 210-220 o C, the reaction time 6 h.
- the jacket temperature of the heated column is regulated at 160-180 ° C.
- neutralization takes place with the sulfonic acid conjugated to the product, and work-up is carried out using a thin-film evaporator as described in Example 1.
- the degree of purity is 98% by weight, the foreign salt content is 1.3% by weight.
- the reaction temperature is 205-210 o C, the response time 8 h.
- the jacket temperature of the column is regulated at 105-110 o C.
- the product After neutralization with the sulfonic acid conjugated to the product and working up by means of a thin film evaporator, the product is obtained in a purity of 98.5% by weight, the foreign salt content is 0.6% by weight.
- the reaction temperature is 200-210 o C, the response time 6 h.
- the jacket temperature of the column is regulated at 160-180 o C.
- the product After neutralization with the sulfonic acid conjugated to the product and subsequent work-up using a thin-film evaporator, the product is obtained in a purity of 98.1% by weight and the foreign salt content is 0.2% by weight.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4431056A DE4431056A1 (de) | 1994-09-01 | 1994-09-01 | Verfahren zur Herstellung von Ethersulfonaten |
| DE4431056 | 1994-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0699661A2 true EP0699661A2 (fr) | 1996-03-06 |
Family
ID=6527100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95113205A Withdrawn EP0699661A2 (fr) | 1994-09-01 | 1995-08-23 | Procédé pour la préparation de sulfonates d'éthers |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5523471A (fr) |
| EP (1) | EP0699661A2 (fr) |
| JP (1) | JPH08193060A (fr) |
| CA (1) | CA2157344A1 (fr) |
| DE (1) | DE4431056A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040127742A1 (en) * | 2002-10-22 | 2004-07-01 | Huntsman Petrochemical Corporation | Alcohol ether sulfonates |
| BRPI0418061B1 (pt) * | 2004-01-20 | 2019-01-22 | Huntsman Spec Chem Corp | uma mistura de éster ânion com propriedades surfactantes para formular produtos de higiene pessoal, e, um produto de higiene pessoal |
| US7427588B2 (en) * | 2007-01-12 | 2008-09-23 | Paul Daniel Berger | Ether sulfonate surfactants and process for making same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2535677A (en) | 1947-02-15 | 1950-12-26 | Rohm & Haas | Method for the preparation of ether sulfonates |
| US4091014A (en) | 1976-12-01 | 1978-05-23 | Texaco Development Corporation | Process for making ether sulfonates |
| US4226807A (en) | 1979-06-07 | 1980-10-07 | Texaco Development Corp. | Process for making ether sulfonates |
| US4465602A (en) | 1982-06-11 | 1984-08-14 | Texaco Inc. | Oil recovery method utilizing an alkylarylpolyalkoxyalkylene sulfonate |
-
1994
- 1994-09-01 DE DE4431056A patent/DE4431056A1/de not_active Withdrawn
-
1995
- 1995-08-23 EP EP95113205A patent/EP0699661A2/fr not_active Withdrawn
- 1995-08-29 US US08/520,712 patent/US5523471A/en not_active Expired - Fee Related
- 1995-08-31 CA CA002157344A patent/CA2157344A1/fr not_active Abandoned
- 1995-08-31 JP JP7223948A patent/JPH08193060A/ja not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2535677A (en) | 1947-02-15 | 1950-12-26 | Rohm & Haas | Method for the preparation of ether sulfonates |
| US4091014A (en) | 1976-12-01 | 1978-05-23 | Texaco Development Corporation | Process for making ether sulfonates |
| US4226807A (en) | 1979-06-07 | 1980-10-07 | Texaco Development Corp. | Process for making ether sulfonates |
| US4465602A (en) | 1982-06-11 | 1984-08-14 | Texaco Inc. | Oil recovery method utilizing an alkylarylpolyalkoxyalkylene sulfonate |
Also Published As
| Publication number | Publication date |
|---|---|
| US5523471A (en) | 1996-06-04 |
| JPH08193060A (ja) | 1996-07-30 |
| CA2157344A1 (fr) | 1996-03-02 |
| DE4431056A1 (de) | 1996-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4670575A (en) | Process for purification of phosphoric mono esters | |
| Pachter et al. | The structure and synthesis of rhetsinine (hydroxyevodiamine) | |
| EP0236700A1 (fr) | Acroléines substituées en alpha,bêta, procédé pour leur préparation et leur utilisation | |
| DE3132332C2 (fr) | ||
| DE4431056A1 (de) | Verfahren zur Herstellung von Ethersulfonaten | |
| EP0025140B1 (fr) | Procédé de préparation de dérivés de 6-amino-6-désoxy-2,3-0-isopropylidène-alpha-L-sorbofuranose et produits intermédiaires de ce procédé | |
| DE2537973C2 (fr) | ||
| EP0385062B1 (fr) | Procédé de préparation de cytosines | |
| EP0455119A2 (fr) | Procédé pour la préparation de la canthaxanthine et de l'astaxanthine | |
| DE3203538C2 (fr) | ||
| EP0708080B1 (fr) | Procédé pour la préparation de diimines de p-quinones N,N'-disubstitué et leur utilisation | |
| EP0673917A1 (fr) | Procédé pour la préparation des arylbenzamines | |
| EP0060049A2 (fr) | Procédé de production de composés intermédiaires utilisés dans la préparation de cyanoguanidines | |
| EP0110432A1 (fr) | Procédé de préparation d'acide 9-fluorène carboxylique | |
| DE2328574C3 (de) | Verfahren zur Sulfonierung von nitroaromatischen Verbindungen | |
| DE69806513T2 (de) | Herstellung von phosphonsäurederivaten | |
| EP0015503A1 (fr) | Procédé de préparation de diazinone | |
| US3133118A (en) | Dibromophenoxy acetic acid | |
| DE4129323A1 (de) | Verfahren zur herstellung von succinylcholinhalogeniden | |
| DE1283820B (de) | Verfahren zur Herstellung von Perfluor-alkyl-alkyl-aethern | |
| EP0285109A1 (fr) | Procédé de préparation de 2-amino-4-acylaminophényl éther | |
| DE1568799A1 (de) | Verfahren zur Herstellung von Benzophenon-Derivaten | |
| DE2450674C3 (de) | Verfahren zur Herstellung von 4-Anilinobuttersäuren und ihren Säureadditionssalzen | |
| WO1998039340A1 (fr) | Procede de preparation d'acides alkyle-1-alcoxyethylephosphiniques | |
| KR860000586B1 (ko) | 트리아진 유도체의 제조방법 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB IT LI NL SE |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CLARIANT GMBH |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Withdrawal date: 19991020 |